1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29ea02dac9e3a104f6eae464697afe8548866ed24ecb0561deec7802a0d9306. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f20761aa-9797-4df7-86be-e1ce9d2a4364.json and https://artists.proofprofile.net/proofs/artist/f20761aa-9797-4df7-86be-e1ce9d2a4364.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854a24682458ecd64f8c2f7a64d199f2585b3c892f3319a80b3ddbdc5f04c71a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2238367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48726221d5c2a6260e2b7d070d92483ddc39e97066679910040c347d248596a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2298730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd11f37368e81613fd23df2a5eeba59b7ebc40511feac62c7856c889ec4cf7ba. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX89G2340372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0405e1e3f1bda147788cbdb84da91c41ca3bac987f2944ef726ff23d1d88e1c5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX89G2349107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aba7666e4eb45db73da8e48cc9e55a95f7cc9dc2cbf75d74f70f9a08e0e1900. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2215886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c941cff0eead0a6c57f0bea343e25d64c93da2ee1ea50fb8e32d7a2c79046de. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2424399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e69b410a56a3ae03354c6ec169dd9136cd1876c47ee81f7db466c4f9c0fce2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2431564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a7ee8b2316d4a77c865b9528e98ab53c1146c32a09c8f6fafb430f30bdc77. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2450360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725c768fda2dde15c0fe927194f8bd626140e293fb3a0ad2c6eaf087adfe101f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLRD52419120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38a42d91ecd95a2b82d173ed1d27973c382e29cf9fdc3eb0d04b08e2dcbf4e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2480747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd4f77bebafe17434d78c7bb275478039826763de544c5347be471c8b205c1e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3M12407266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a35c78f5dc43ae319bd7d6013fa7c1ee74690dd99778133d633044f72874de. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3M12407268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb31db6106bae650348ac0e767d48d3f964a62665db039ffb82c4c1c05ea2b35. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3M12407328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3db674a3a1f27cdb068052607c6f684ca3cf36d1fda8c1a3320768cd6ef793. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2515119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebee1a811a46f656e95471a8cfd9d87f5efdd31ee880799c19c50d3ebc5736a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2534720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c11d6acbf11a26c031bcac14658e5fdd16921532d095ce3beb461fe0c06da2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2534717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb14cdf8e1cae0c24bd3bc9c49b3aa33427a190cbd915178c11cac9315cd5102. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2552796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47446907792634078f37d9ea1a9a051a5f9ee8cf0fb9a0b7021a34b2bd20b6f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92598834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235be811ccea76be8b4b6c6d16740bed8b9de29ef2e591f999f69ae6f41a3bda. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92598835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8594d76e90650f4ba8699db24206b4256492de08dff8b8a477a782df2038a4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FXR952560682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25451137cd00098ec43d2d814a3d85bd4d0d5587199c8e26c196fba20b166fd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2546335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd0015f5385fb863861687fd77d2ea01cdf9ef00b7138d3c79bcc532300d928. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2546336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7a4ccd6c7b2e595fba52fe896609e7974cfbdef9fd48d802f3eee510247c31. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2546337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda33566e7ec3b38725118cae656a18a6e01282550a9d7da6849095dae5b74074. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2546338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8190338d97bdd87c52b3ee3e475b70f7b8622da06455dce55046dd8cedb53. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2546339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e226f3964eeaec09df74d0886ecaefedb924d2f55bef844f067deb1f834a537. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL9KQ2590901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59a8d3616499e6c736950a3f53d293e8d6c9a395f95759edcd9c9ae99de679f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:40:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL9KQ2590906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c0224e44cb580647d2a7118502b084d314562adcb4d1bf2596e956474230a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872594732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63993914445793330f003d085b313568477689ae236c07da4c2e6f81c487d452. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT5M32537416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dbf51d34d0cc22473d68f9161893e942759008ec0156d6ed25843c1a577164. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072514035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7043931d2f1e460e2e54a6cd59de604ae2e9bd51e6633733086839327c370fe8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072514036.